Feeding mechanism for sewing machines



' Feb. 2, 1932. J. BERGER FEEDING MECHANISM FOR SEWING MACHINES Filed Feb. 15, 1926 4 Sheets-Sheet 1 Feb. 2, 1932. J. BERGER 1,843,197

FEEDING MECHANISM FOR SEWING MACHINES Filed Feb. 15, 1926 4 Sheets-Sheet 2 F Cci afZ- Feb. 2, 1932. BERGER 1,843,197

FEEDING MECHANISM FOR SEWING MACHINES Filed Feb. 15, 1926 4 Sheets-Sheet 5 J BERGER 1,343,197

4 Sheet-Sheet 4 Feb. 2, 1932.

FEEDING MECHANISM FOIi SEWING MACHINES Filed Feb. 15, 1926 Patented Feb. 2,1932

A umreosrarss PATENT orrics JOSEPH 'ianrtenr or' UrIoA, NEW YORK, ASSIGNOR 'ro UNION SPECIAL MACHINE COM- PANY, or CHICAGO; ILLINOIS, A COB?ORATION on rLLINors FEEDING MEoi-rANrsri roa SEWING MACHINES Application filed February 15, 1926. Serial No. 38,298.

'The invention relates to new and useful improvements in feedlng mechanisms for sewing machines,' and more particularly to a feeding mechanism used inconnection with .so'as to provide a suspended arm around which the material being sewed can be placed. In machines of this type, the feeding mechanism and looper mechanism are located in the w'ork supporting arm,' and the actuating devices therefor extend through the supporting member or the vertical post.

- An object of the present invention is to provide a machine of the type wherein the work supporting arm is-suspended from a depending vertical member, and wherein the arm is detachably connected to the lower end of said vertical member and contains the feeding mechanism and the looper mechanism which are'actuated by parts in the vertical member; the devices for connecting the parts in the vertical member to the feeding mechanism and the looper mechanism in the work supporting arm are supported by'a devta'chable arm, so that'said detachable arm and provide a feeding mechanism for-a work supthe immediate actuating mechanism for the feeding mechanism and the. looper mechanism can beassembled in said arm and attached to or'removed from the sewing ma- ;chine proper as aunit;

A further object of the invention is to porting arm of the above type wherein the actuating mechanism includes'parts mounted on a cross shaft located at the upper end of the detachable work supporting arm and directly beneath the vertical member which supports the same.

A still further object of the invention is to provide a machine of the above type wherein said stationary .cross shaft carries an oscillating sleeve for imparting the back 7 and forth movements to thefeed bar, and wherem a second osclllating sleeve 1s mounted on the first oscrllatmg sleeve for impartjing back and forth movements to the looper supporting shaft, said sleeves being oscillated by eccentrics on the main shaft directly above the parts to which they areconnected, said eccentrics being mounted on an actuating shaft extending, at an acute angle ing arm. H

A further object of the invention is to pro vide a machine of the above type wherein the eccentric for moving the feed bar back and forth is capable of adjustment on an actuating shaft for the purpose of varying the stroke oifthe feed bar.

A further object of the invention is to provide amachine of the above type wherein the feed bar has a relatively wide end for supporting the feed dog so as to prevent any to the longitudinal axis of the work supportt-ilting or cramping of the parts during the feed operation.

A further object of the invention is to pro vide a feeding mechanism for a work sup illustration one embodiment of the invention-- Figure l is a view partly in perspective and partly in section showing a machine embodying the improvements;

Fig. l is a view partly in side elevation and partly in section showing the detached work support-ing arm and the actuating devices for the feed and the looper as disconnected from the main actuating shaft;

Fig. 2 is a plan viewof the detached work supporting arm with the eccentric straps, the

cover plate and the end cap for the looper removed Fig. 8 is a sectional view on the line 33 of Fig.2;

Fig. 1 is a sectional view on the line 4-41 ofFig.2;'

of Fig. '7 I "I5 Fig. 5 is a perspective view of one of the eccentrlc plns for supporting and leveling the feed bar;

Fig. 6 is a sectional view on the line 66 ofF1g.1; Fig. 7 is a transverse sectional View through the upper end of the depending sup.- v

porting meinber of'the frame and showing the adjustable eccentric for actuating the feed barba'ck and forth;

'Fig. 9'isja view partly in section on the line 9, 9 "of Fig. 8 and partly broken away,

on enlarged scale, showing the eccentric foractuatingth'e feed bar and the adjustable support therefor Thezinvention is directed broadly to a feeding ine'chanismfor a sewing machine havinga suspended work supportlngarm, andpref-V 'erably a machine'of the type shown in thev Patent No. 1,741,095, granted Christensen and Le Vesconte, Dec; 2 1," 1929. The machine of the present application includes a supporting base or, frame 1 which is provided with an overhanging portion at the upper end to which the main frame 2 of the machine is integrally attached. Thesupport- :mg base is attached'to said main frame at both ends thereof. Located in thismain sup- 7 porting frame 2 is a main actuating shaft 3 which is driven by a belt wheel 1. Pro ect- "ing forwardly from the left-hand side of the frame 2-isahousing 5 in which the needle bar 6 'reciprocates, said needle bar carrying needles 7,7. A presser bar Sis also located in this housing and carries a presser foot 9. 40'

'2 there is a depending member 10. (The At'the right-hand end of theframe supporting base 1, the frame 2, the de pending member 10, and a portion of the housing 5, areall cast as one integral piece. The main shaft 3 is mounted in suitable bear- :ings, one of which is shown in section in Fig. 1 at 11. The depending member 10 term inates on'theline wm (see Figures 1 and 6) Attached to the lower end of thisdepending member 10 is the work supporting arm 12. Said work supporting arm 12 is substantiallycylindrical in form, and extends from a point directly beneath the vertical member 1 to a point beneath the needle bar 6. 'Inasmuch as the frame 2 is directly above the dependingmember 10, and the. needle bar is offset from this frame 2, asit is mounted in the forward end of the laterally projecting housing 5, the worksupporting arm 1 2.neces- 1 sarily extends in a direction at an acute an I gle to the actuating shaftj This work supportingarm .12 is suspended so that there is a clearance underneath the same and a clearance between said arnrand the supporting base 1. The material to be stitched may be Fig. 8 is a sectional View on the line 8+8;

ieeai ev passed underneath said work supporting arm and folded uparound the .arm so as to stitch a tubular member, and as the tubular member is stitched, it is passed off the end of the work'supporting arm. The fabric forming the. tubular member will, of course,

be folded up around the portion ofthe arm which projects from the depending member 10. The work supporting arm extends all the way across the lower'end of the depending members and projects therefrom to provide a work supporting portion. The work formed so as to feed the material ,offfrom the end of the work supporting arm. Said feed bar atthe extreme left-hand end thereof is provided with a very much broadened'face 17. The feed dog 16. has abroadened shank 18 which rests on this broadened face 17 of the feed bar, and said-shank is secured thereto by screws 19, 19. This makes agvery wide and durable support forthe feed dog. 5 The work supporting armis provided with spaced faces 20, 20 between which the freeend ofthe feed bar reciprocatesbackandforth. This feed bar 15 is mounted at itsv forward end on a swinging link 21 ."v The feed bar is .pi'voted at22 to saidswinginglink. The swing-V ing link in turn is pivoted at 23 to a lever 24,

which lever extends longitudinally of the work supporting "arm and to a point in the arm beneath the depending member 10. At

its inner end, which is the right-hand end as j viewed in Fig. 1, there is a ball stud "25100 which an eccentric strap 26is connected. This eccentric'strap 26 cooperates withan eccentric 27 on. the main shaft 3. The lever 2 1is fulcrum-ed on a pin 28 shown in perspective in Fig. 5, and provided with an eccentric portion and with a slotted head SO. This eccentric-pin is accessible from the outside of the work supporting arms A set screw 31- 'holds the eccentric pin in adjusted positions. -Whenit is desiredto raise the front end of the ,feedbar, this set screw 31'is released, and the operator, bythef aid of screw driver, can turn the eccentric pin so as 'to'raise or lower the free'e nd ofthe lever 24', and this in turn willraise or lower the free end of: the feed bar 15; i I V The rear end of the feed bar is mounted on aswinginglink 32. This swinginglink 32 is provided with two upwardly extending arms 33, 33 which extend on opposite sides of the fced'ba-r' 15, and are secured thereto by means of a pivot screw 34. The'lowerend of the link is mounted on an eccentric pin 35 which feed bar can be raised and loweredlso as to ve-rtical'ly adjust"thelongitudinal axis of the V whi'ch have just been Thefeed bar is'moved back and forthon is of the construction of the eccentric pin Thiseccent'ric pin is held inadju'sted *positionsb'y a set screw '36. By adjusting this eccentric pin 35, the rear end of the feed bar can be raised or lowered. Through the use of these two eccentric pins above referred to, the feed bar'may be either raised or lowered-at either end thereof, and one end maybe raisedwhile' the other end is lowered. This provides a means whereby the path of travel of the feed dog or so as to cline said axis. By this means, the working position of the feeddcg can be varied, and

the feed'fdogmaintained level or lIlCllIlBdyflS desired. The: present machine is provided --with only one feed dog, and is] especially adapted for operating uponnon-elastic fabrics. Even non elastic-fabrics are sometnnes stretchable, and'itis-desired to incline the feed dog so as tolcrowdthe material forwardto avoid the materialfroni being stretched as it is stitched. On the other hand,it is some times desirable to inc line the feed dog in the oppositedirection so jas' to draw-the material away from the stitching point and prevent piickering or gathering of the same during-stitcliing. 'This can allbeaccomplished bythe adjustment of the two eccentric p ns described.

' ithe swinging links by means of a link 37 which is oted at 39 pivoted at 3'8-to the rear end of'the The otherjend of this link is pivto a depending "arm 40. Mounted in the'det'achable work supporting arm 12 and 7 cross shaft 41. its supporting bearings by 42. Mounted on this stationary cross shaft is Q eccentric 48 is in the form of aring (see 17) which ring is screw is readily midway between the front and rear sides of the :depe'nding' member 10, is a stationary Said cross shaft is "fixed in means of set screws agsleeve-43 (see Fig. 6). Clamped to this sleeve 43 is a split'col-la'r 44 with which said arm 4-0 is integrally formed. A clamping jbolt 45 serves to attach said split collar to the 1 sleeve Said sleeve ,is'also provided with a l'ater'ally which an eccentric strap 47 is attached. This 44E projecting arm 46"carrying a ballto eccentric strap 47'cooperates with an eccentric .4 8 on the mainshaft 3. As the main shaft 'rotates,the' eccentric strap 47 will oscillate the sleeve 43, and. said oscillations of the sleeve 43, through the arm 40 and link 37, will move the feed bar back and forth. The

n Fig. pivoted at 49 to a. lug carried by the collar 50,' -which collar '50 is secured'to the shaft 3 by means of screws 51.

formed therein,

The eccentric has a segmental recess 52 and a slot 53'leading from the bottom' of'said recess to the inner face of the ring. screw 54 extends through said slot and is threaded into the sleeve 50. This accessible through an opensupport on the sleeve, and then the eccentric r the eccentric is supporting arm is a looper supporting shaft porting shaft 'ing 54 in the eccentric strap when th actu can be again secured in its adjusted position. The bottom of the recess is formed about the pivot point 49 as a center. The side face of provided with radial grooves 48. When the cover plate 78 is removed an instrument such as a small screw driver can be passed down alongside of the bearing 11 in which the-main shaft 3 is mounted, and engage these grooves so as to adjust the eccentric Without removing the eccentric strap, Through the above structure, the eccentric iscapable of adjustment on the main shaft so that the throw of'the eccentric can be varied. lVhcn the-throw is increased, then the stroke of-thefeed bar will be increased, and when the throw of the eccentric is decreased, then the stroke of the feed bar will likewise be decreased.

Extending lengthwise through-the work 90 55'on which a looper carrier 56 is mounted. and said looper carrier is provided with two loopers ,57, These'loopers are of the thread carrying type and are oscillated into and out-of the needle thread loops, and are r 9.) moved laterally to avoid the needle after the manner common with thread carrying loopersa The shaft is mounted in suitable bearings 58 and 59 which are cast integral with the work supporting arm, and also in a bear ing 60 which is removably attached to said work supporting arm at the rearend of the shaft. On the rear end of the looper supthere isa crank arm 61 carrying a ball stud 62. A link 63 cooperates with .3 said ball stud'62 at the lower end of the link. On the extreme right-hand end of the actuating shaft 3 there is an eccentric 64 with which an eccentric strap 65 cooperates. Mounted on this eccentric 64 is a ball stud i 66 which is offset from the center of the shaft 3. The upper end of the link 63 cooperates with this ball stud 66. Attached to the ball stud atthe outer end thcreofis a rectangular block 67. Said block is secnred' 1 to the stud by a screw 68. Attached to the link 63 is a'bracket 69, which is forked at the upper end and straddles said rectangular block 67. The purpose of this bracket is to prevent the link 63 from oscillating on the j ball studs to which it is attached. This link 63 oscillates the looper shaft and causes the loopers to move into and out of the needle threadiloops. Mounted on the looper supporting shaft are two spaced collars 7O and'125 71.. These collars are fixed to the looper supporting shaft. Between said collars is a sleeve 7:2 which is freely supported on the looper shaft. Said sleeve has an upwardly projecting arm 73. Links 74 are pivotally '7 5. Said second sleeve connected to said arm at opposite sides thereof. Mounted onthe sleeve 4L3 is afsecondsleeve is' freely mounted on the first-named sleeve and can oscillate there- .on. Said second-named sleeve is provided with a depending arm -7 6, and the links 74:

a are pivotally connected at the other ends thereof with this depending arm 76. Said sleeve? 5 has a laterally pro]ecti11garm 77 carrying a ball head strap 65 is connected. Thus it is that the eccentric 64 on the main shaft 3 oscillates .the sleeve, and the sleeve, throughits connection with the looper supporting shaft, moves said shaft endwise in the work supporting arm. This impartsthe lateral or needle avoiding movements to; the loopers.

I pending member 1 provided with a p After the spot screws holding the-eccentrics The eccentrics 27,- 48 and 64 areall connected by spot screws to the mainshaft 3, and when screws are loosened,the shaft can from the eccentrics. The dethese spot be withdrawn removable cover plate '78.

have been loosened,;the main shaft can be moved endwise to-the leftv as viewed in Fig.

i so

the assembling, of the parts.

; shaft of the machine.

' mounted in the work extend lengthwise thereof.

' bar and looper,

1, and withdrawn work supporting formed therein, supporting shaft may feed bar and the looper su 3 ortin arm so said arm with the eccentric straps can be removed from the machine. On; the other hand, the feed bar, looper shaft and actuating devices therefor, can all beassem'bled in the detached work supporting arm, after which the work supporting arm can be con- 3 nected to the main frame, the eccentric straps connected to the main actuating shaft, and

the machine is assembled. It willreadily be seen that there is a greatadvantage in the detachable arm in the casting of the, parts of the main frame. There is a further advantage in the ability to assemblethe parts inth'e work supporting arm before it is attached to the main frame of the machine.

The machineso far described isparticularly adapted for'operating upon non-elastic materials, such. as are used. in the making of overalls and the like,

the material is elastic, and whereit is also anism. The

c for the assembling of with which the'eccentricj due to the factth'at thework support 10, and main frame 2- are nation a main frame :porting arm are all mountedin the work that after the eccentric I straps are disconnected from the mainshaft,v

a unit.'

porting arm to Thismachine is likewise intended tob'eused for knit work, where desirableto use a difierentialfeeding mech differential feeding'n echanisni may be likewise assembled; in, the work sup porting arm in the place of the single feed bar andfeedgdog illustrated, :and tlre de tached arm attachedto the main supporting frame of the-machine -;In. other words, the

main frame may be used asa standard. frame machines of different types,

ving arm is removable asi a unit, and anotherwork supporting arm with d fferent mechanism assembled. tl1erein, may=b e substituted therefor. i -:1;

Y Itis obviousthat minor changesin thede tails of construction and the arrangement of the parts 'may;.be made ,without departing 7 from the spirit-of-the inventionv as set forth in the appended claims.

Iclaim as new and desirefto seeure by Letters- Patent,is "i 1; A'sew:'ng machine :incl idingiu combihaving a depending memberopen at its lower-end a main shaft carried by saidframe and extending over I said depending member, a work supporting arm, means for detauzhab'lysecuring isai work supporting arm; tothe lower 'end' of said depending member with said arm extendingat right angles, t

a the depending member, a stationary shaft. mounted insaid worksupmember,- a feed bargextending lengthwise of rsaid'work supportingarm, an, oscillating sleeve mounted onsaid .stationaryrshaft, an

arm projecting-from said sleeve, means for connecting said arm to saidfeed'bar for; movingthe feed barendwise, a: second arm carried by said sleeve,.a]vertically reciprocating member in said dependinganember connected to.v said second arm for oscillatingthe sleeve and an eccentrically"arrangedlmember on said main shaft .to which :said vertically reciprocating memberis connected whereby said vertically reciprocating me 7 her when detached from said 'eccentrically arranged member together with the parts operated therebypand the work "sup eru arm in which they are disposed, may be removed as sewing machine including in combi nation a man framelhaving a depending member open at its lower end ama n shaft carried by said frame and extendingover said; depending member,

7 aworksupporting arm, means for detachably securing said work'supthe lower end of said'depending member with said arm 'eXtendingJatright angles to the depending member, a stationary shaft mounted in said work 7 supporting, arm 'directly beneath thedepending member, a

feed bar extending lengthwise of said work supporting arnnfan oscillating sleeve mounted on said 'stat1on"ar'y; shaft, an arm pro ec ting directly beneath the depending Having thus describedtheinveiitien; ,8

from, saidsleeve, means for connecting said arm tosaid feed bar for moving the feed bar in said niember located in said a screw located in said sl'ot a second arm carried by said a vertically reciprocating member depending member connected to said secondarm for oscillating'the sleeve, a loop-er shaft extending lengthwise of said work supporting ar-n'i, a second sleeve mounted on said first-named sleeve, said second' sleeve having a projecting arm, means for connecting said projecting arm to said looper supporting shaft for moving said shaft endwise, sleeve,

endwise, said second sleeve having a second projecting arm, a'vertically reciprocating depending member and connectedto said second arm for oscillating the same-and 'eccentrically arranged inembersonsaid main shaft with which said vertically reciprocating members respectively cooperate whereby when said vertically reciprocatingmembersare detached from the eccentrically arranged members, said verti .cally reciprocating members together with the parts actuated-thereby and the work sup porting arm may be removed as a unit.

e 3. A sewing. machine ncluding a mam frame having a main operating shaft located the eccentric, said ring-shaped member having a segmental slot extending therethrough, and adaptedto engage said sleeve for holding said'ring in various adjusted positions on saidsleeve, for

7 having an varying the throw of said eccentric, said actu-' atlng' devices including an eccentric strap cooperating with said eccentric, said strap opening .therethrough, whereby said screw is accessible for adjusting the eccentric withoutremoving the eccentric strap.

' at. A sewing machine including a main frameh'aving a main operating shaft located therein, said frame having a depending mom lo-er .'a work supporting arm connected to the lfowc end ofsaid depending member, feed barfientending lengthwisejof' said work suplowerendof said depending member, a feed bar including an eccentric on the main shaft, said eccentric including a ring-shaped member,'a sleevehaving a projecting lug to which said ringshaped, member is pivoted, said sleeve being fixed tothe actuating shaft for the eccentric,saidring-shaped member havi'nga se mentalslot extending therethrough, a screw {l'ecatedj-in; said slot and ada-ptedto engagesaid sleeve for holding said ring in variousadjusted positionson said sleeve, for

'member on which said lever is means accessible from theoutside of said i work supportlng arm for adjusting said ccvarying the throw of said eccentric, said actuating devices including an eccentric strap cooperating with said eccentric, said strap having an opening therethrough, whereby said screw is accessible foradjusting the eccentric without removing the eccentric strap, said eccentric having radial grooves formed in the side face thereofto aid in the positioning of the eccentric during the adjustment thereof.

5. A feeding mechanism for sewing machines includfeed bar in said arm extending longitudinally thereof, a feed dog carried by said feed bar, means for supporting said feed bar whereby the same may be moved endwise of the work supporting arm, said supporting means including eccentric members accessiblc from the outside of the work supporting arm whereby said feed bar may be raised or lowered at either end thereof.

6. A. feeding mechanism for sewing machines comprising a work supporting arm,

a feed bar extending lengthwise of said arm,

a feed dog carried thereby, swinging members located adjacent the opposite ends of said feed bar for supporting the same, whereby said feed bar may be moved lengthwise of the work supporting arm, an eccentric member for supporting each swinging member, accessible from the outside of the work supporting arm, and adjustable whereby said feed bar may be raised or lowered at either end thereof.

7. A feeding mechanism. for chines comprising a feed member extending, lengthwise ofsaid sewing mawork supporting arm, a. feed dog carried:

thereby,

a lever extending lengthwise of said work supporting arnna vertical link connecting the forward end of the lever with theforward end of the'feed. bar, an eccentric fulcrumed,

centric member, means for holding the eccentric member in adjusted position whereby the forward end of the feed bar may be raised or lowered, a swinging member for supporting the rear end of said feed bar, means connected to the feed bar for moving the same endwise, an eccentric member for supporting said swinging member, mean-s accessiblefrom the outsidc'of said work supporting arm for adjusting said last-named eccentric member,

and means for securing said last-named eccentric member in adjusted positions.

8. A sewing machine including a main frame having a depending member'open at its lower end, a work supporting arm con nected to said depending member and closing the lower end thereof, a: feed bar extending lengthwise of said work supporting arm, a looper shaftezitending lengthwise of said work supporting arm, a lever for raising 1;; a work supporting arm, a-

a work supporting arm,

7 extending lengthwise of and lowering the'fron't end of the feed bar said work supportingo arm and terminating beneath the depending member, rocking members mounted'to swing about a common cent-er in and" adjacent the upperedge'of'the work supporting arm andcentra'lly beneath said depending memben'a main actuating shaft in said main frame disposed in the upperend of said depending member, three spaced eccentrics on jsaid main shaft, an eccentric strap {cooperatingwith one eccentric and "enu rates said-lever for oscillating the ,same an eccentric strap cooperating with another "eccentric and connected to one of said rocking shafts for oscillating the same, and. aneccentric strap connected I with I a third eccentric, and with the otherrocking shaft for oscillating the same, the connections' between the eccentricjstraps' and the lever and rocltshafts lying substantially in a line directly beneath the main actuating shaft, said, main actuating shaft" being disrocatingdevices extending through said deframe having .a depending member said Work supporting arm posed in a vertical planecuttingthe vertical plane contammg'th'e longitudlnal axis of the work supporting'arm at an acute angle.

"9.A sew machine 'including a main its lower end, awork'supporting arm extendlngatri'ght angles to salddependmg member, means for-detachably connecting ing member at the lower end pending member, for operating said feeding mechanism; said feeding mechanism includ mg a' feed'bar'located in and extending lengthwise 10f; said work supporting arm, a

. rock lever connected to the feedbar'for mov- 'ingjs ia raajbar taue and forth, Sara" e:

, the said members operated being connected'jto one of said recipr rojcat ng' def' es "in salid depending member, and'means operated by the other reciproeating. device insaid depending member for raising and loweringsaidfced bar, all of eating :devices in the depending member being mounted in said work supporting arm whereby "the'feedi'n'g mechanism maybe assembled in said work supporting arm 1 and said arm subsequently connected to said fdepending member.

10.- A sewing machine includingfa main frame having a depending memberopeniat: ltsflower end, a main shaft in said frame ex tendingover the upperiendof said depending member, a work supporting arm' extending atright angles to the dependingmem-f :ber, m'e'ans for- 1 detachably connecting a said 7 work supporting arm] to said depending member at the lower end thereof, a feeding mechanism supported with-insaid work sup-1' porting arm, an eccentric onthmain shaft," a reciprocatlng memberoperatedby said cc to said depend-'1 thereof, a feeding mechamsmlocated'm said arm, rec1pby said recipro} at right means for detachably' =conn'ect1ng'said work nseam? centric extending-thrbiughsaid depending member and" connected' to said feeding mechanism for imparting; feeding movements thereto, an'eccentric; member on said main shaft, an eccentric strapcooperating therewith extending through said depending member and connected to said feeding mechanism for raising and lowering the same, a looper in'echanism located'in said work supporting arm including a. looper mounted for oscillation andfor lateral movement, an eccentric on said mam shaft, 'a rec1procatm'g' member cooperating with the eccentric and extending through said depending member for moving the-looper laterally, a crankon said main shaft, a reciprocating member, cooperating therewith and extend ng through said de-;

pending member and connected to saidlooper -o for oscillating the same, all of the actuated parts of the feeding mechanism and the loop? supported bysaid work er mechanism being I supporting arm whereby said parts may be assembledi'nfsaid work"supportingarm and thearm' subsequently connected to said'tlB-l:

endin member 11. A sewing machine including a main frame having a'dependm'g inember open at its lower end, ai'worlrsupporting arm extending at right angles to said depending memdetachably connecting said work supportingarm'to the lower end of said depending member, a feeding mechanism located in said work supporting arm including a feed bar,a rocker feed bar b'aclrandforth and ing and "lowering saidflfeedbar, all of; said ber, means for parts of the feeding mechanismbeing mounted inand removablewithsaid worlrsiipporting arm, armain sh aft 'mounted'in saidframe at the upperend of said depending member,

and" devices directly operated'by said shaft and connected to sa? llever andsaid rocker in the 'work supporting arm free from sup'portby the depending member whereby when disconnected fromthe main shaft said devices the parts operat d th by a d th Work supporting arm may be removed as a unit.

T 12; A sewing machine includinga main frame having adependmg' member open at its lower end, a wor angles to saiddepending member,

supporting arm to the lower end of said depending member, a feeding mechanism located in said work supporting arm including feedbar, a rocker for moving said feed bar baclrandforth and a lever for raising and lowering said feed bar, alliof said, parts'of the feeding mechanism beingnn'iu'nted in and re movable with said work supporting.arm,a

mainv shaft mounted in saidframeat: the

upper endojf' said depending member, and devices directly operatedby said shaft-fand for moving said aleverfor rais respectively for actuating the feed bar, saiddevic'es'being a supporting arm extending .to' said lever and said rocker inrespectively for actnating the feed bar, said main frame havingian'sopening with acover platetherefor atonn'ected 5 the upper end of the depending member for renderin'g the main-shaftjand' interior ofsaid- :depending member accessible whereby.

' the actuating devices-fortliei feeding, mecha=- msmvniay be. disconnected from, the, mam

feeding. mechanism assembled therein, "removed as a unit, said'devices being: free from support by. the depending: member whereby when disconnected from'the main shaft said devices the parts opera-ted" thereby and the 1 workfsupportin-g, arm: may be. removed. asa

uniti, v I 1 3:;Aisewin machine includin 'a :main

i h C frame;having-"a depending member open at- 1ts-.lower-.end,a' worksnpportmg arm extend.

ght angles tosaiddepending member, means" for deta chably connecting said;

work-supporting arm'to the lower end of saiddepending member, a; feeding mechanisnrlocatedinasaid work supporting arm includingJa feed-bar, a rockerfor moving said feed'bar back andforth anda lever for raising and lowering said feed bar, all ofsaid parts of the feeding mechanism being mounted in and reniovablewith said'work support ing arm, a main shaft mounted'in said frame at the upper end of said;depending.member, an eccentric mounted'on the mainshaft, an ecs centric-strap cooperating therewith and connected tothe rocker in said work. supporting arm,.a second eccentric onsaid main shaft and anleccentric strap cooperating therewith and connected to the lever in said work supporting arm, said eccentric straps being free from support by the depending member whereby when said-straps are disconnected from the eccentrics said straps, the parts actuated thereby and the work supporting arm may be removed as a unit.

14. A sewing machine including a main frame having a depending member open at its lower end, a work supporting arm extending at right angles to said depending member, means for detachably connecting said work supporting arm to thelower end of said depending member, a feeding mechanism located in said work supporting arm including a feed bar, a rocker for moving said feed bar back and forth and a lever for raising and lowering said feed bar, I feeding mechanism being mountedin and removable with said Work supporting arm, a main shaft mounted in said frame at the up per end of said depending member, an eccentric mounted on the main shaft, an eccentric strap cooperating therewith and connected to the rocker in said work supporting'arm, a second eccentric on said main shaft and an ec- 1 centric strap cooperating therewith and connected to the lever in said work supporting shaft and: the work-supporting; arm, with v the member and connected to allof said parts of the arm, a looper shaft mounted in said work supporting arm, a looper carried by said shaft at the free end thereof, the other end of said looper shaft terminating beneath said depending member and having a crank thereon, a rocking member mounted in said: work supporting arm directly beneath the depending member and connected to the looper supporting shaft for moving the same endwise, a thirdeccentric member on said main shaft, an eccentric strap cooperating therewith and connected to said rocking member, a crank carried by the end of said shaft and a link connecting said crank with the crank on the looper shaft for oscillating the same said eccentric strapsbeing freefrom support by the depending member when said straps are dis connected from the eccentrics, whereby said straps, the parts actuated thereby and the work supporting arm may be removed as a unit.

-15; A sewing machine including a main frame having a dependingmember open at its lower end, a work supporting arm extending at right angles to said: depending member, means for detachably connecting said work supporting arm tot-he lower end of said depending member, a feedingmechanism located in said work supporting armincluding a feed bar, arocker for moving said feed bar back and forth and a lowering said feed bar, all of said parts of the feedingmechanism being mounted in and removable with said worksupporting arm, a main shaft mounted in said frame at theupper end of said depending member, an eccentric mounted onthe main shaftgan eccentric strap cooperating therewith and connected to the -rocker insaid work supporting arm, a second eccentric on eccentric strap cooperating therewith and connected-to-the lever in said work supportat the free end thereof, the other end of said loopershaft terminating beneath said depe11ding-cmember and having acrank thereon, a rocking member mounted. in said work supporting arm-directly beneath the dependin the looper supporting shaft for moving the same endwise, a thirdeccentric member on saidmain shaft, an eccentric strap cooperating therewith and connected to saidrockingmember, a crank carried by the end of said shaft and a link connecting said crank withthe crankon the l'oopcr shaft for oscillating the same, said main frame having an opening with a cover plate above the depending; member whereby access may beyhadvto the eccentrics and crank on the'main shaft for disconnecting the same from the parts. actuated thereby, whereby said, work supporting arm may be removed, with thea'ssembledafeeding mechanism and loopermeohanismtherein, as a unit. I

said main shaft and, an-

I portion thereof conforming to lower end of said depending member, ecur- 16FAsewing machine incliulin'g a main frame having a depending member open at its lo v'ver encha main shaft in themain frame having a plurality of eccentric members located directly oversaid depending D1611'1l3B1,' L Work supporting arm extending at right anand having a and fitting the:

gles'to the depending member ing boltslocatedwithin said dep'ending'memher and dtachably connectin'gsaidarm to W said depending member, a feeding mechanism located in said'arm',;a loope'nmechanism cat'ed in saida m, actuating device's'connected to said eccentric members and extending through said dependmgmember for actuat ing the feeding mechanism a'nd-looper mechani'sm in said woi-lrsupportmg arm,

the actuj ated partsof said feeding mechanism and said arm located beneath and l looper mechanism being all supported by said Work supporting arm wherehy when said :acfc tuating devlces are disconnectedfrom the; ec-

centric membersrand thcsjecuring bolts re moved,-the Work supporting arm may ibe; re-

moved from the m'achme as a unit. I

'17; A sewing machine including main frame, a depending member openingdoWn- \vardly at'its lower end, a Worksupporting nected to the lower end ofsaid depending member and extending substantiallygat right angles to said depending member, means for detachably connecting said Worksupporting arm to said depending member, aie'eding mechanism located in sald Work i supporting v arm, a looper' mechanism located in" said the actuated parts disposed 'in said dependsaid Work supso that the ver-f I passing longitu'dinally through 5 a Work supporting arm, a' main actuating shaft located in said main frame at the upperend of" said depending inember,} the actuated parts of the feeding mechanism and looper and looper mechanism det (3-011:

actuating devices connected to said eccentric members and extending through said depending member into the Work supporting arm and connected to the feeding mechanism for actuatingnthe same, said actuating devices and said feed-- ing mechanism and said loopercmechanisin all being supported by said work supporting arm whereby when said actuating devices are disconnected "fromi the eccentric members, said Work supporting arm may be removedfrom the machine as a unit. L Q i H 19. Asewing machine including a main framehaving a depending member opening downwardly at its lower, end, a work. sup-, 5 porting arm located beneath: anddetachably conlnectedto the-lower end of said depend ing member and-extending at right angles to said depending member, means 'fOr detaclP ably connecting 'said work supporting arm 5 tosaid depending member, a feeding mechanism. located 'n said arm, reciprocating devices extending through said 7 depending member for operating said feeding'mechanism, said feeding mechanism including de-- L vices for converting the movements-of one of the reciprocating devices in'said dependingmember into a horizontal movement for imparting lengthwise'movement to the feed bar, said last-named devices being mounted 5 in said detachable work supporting arm whereby said 'feedingmechanism'may be as 'sembled in said work supporting arm and said arm subsequently attached to said depending member; 1 4 J ;In testimony whereof, I'afiix my signature, i LJOSEPH BERGER.

mechanismbeingmounted in said Work sup porting arm', and actuatingfm'embers crim ia rtin movement-s from the 'main shaftto ing member, said shaft and porting arm being disposed tical plane said main actuatinghshaft and the vertical lanepassin throu hthelongitudinal axis of the Work supporting armwil-l intersect in; 1

a linesuhstantially centrally of thedepend ing'memberand at'an acute angle. 7

'- 18. A sewlngmachine downwardly" at its lowerend, a main shaft located-beneath and 'det-achably conneeted'to the lower end ofsaid depending member With said arm extending'iat rightangles to said depending'member, means for detach ably connecting said arm to said depending member, a'feedingmechanism located in said 5.

arm, a looper mechanism located in said-arm,

'includingaunain- V frame-havingia;dependmgmember opening I v 1 

